Flat pompom kelp, strap kelp • Lessoniopsis littoralis

Right: this species has a stiff, trunk-like branching stipe. Photo by Wiebe Nijland. Top left: long, thin, strap-like blades that cluster are a key ID feature of flat pompom kelp. Bottom left: the stipe branches dichotomously many times, with each terminal branch leading to a blade - this branching is also indicative of this species. Photos by Joel White.